Stage-number reduced gate on array circuit and display device

Abstract

The present disclosure provides a stage-number reduced gate driver on array (GOA) circuit and a display device. The circuit includes one or more stages of GOA sub-circuits. Each stage of GOA sub-circuits includes a gate signal input end, an original output end, one or more sub-output ends, and one or more branching devices respectively corresponding to the one or more sub-output ends. The gate signal input end and the original output end are respectively connected to a branching node. One end of the one or more branching devices is respectively connected to the branching node. Another end of the one or more branching devices is connected to the corresponding one or more sub-output ends. The present disclosure can solve the problem of excessive length of the GOA circuit in high-resolution model which is not conducive to a narrow bezel design.

What is claimed is: 
     
       1. A stage-number reduced gate driver on array (GOA) circuit, comprising one or more stages of GOA sub-circuits, wherein each of the GOA sub-circuits comprises a gate signal input end, an original output end, one or more sub-output ends, and one or more branching devices corresponding to the one or more sub-output ends; and
 the gate signal input end and the original output end are connected to a branching node, a first end of the one or more branching devices is connected to the branching node, and a second end of the one or more branching devices is connected to one or more corresponding sub-output ends; 
 wherein a number of the one or more sub-output ends of each stage of the sub-GOA unit is n, a number of the one or more branching devices is n, the one or more sub-output ends comprise a first sub-output end, a second sub-output end, . . . a (i)th sub-output end, . . . , and a (n)th sub-output end, and the one or more branching devices comprises a first branching device, a second branching device, . . . a (i)th branching device, . . . , and a (n)th branching device; 
 wherein a turn-on time of the (i)th branching device is at a i/(n+1) turn-on time of the gate signal of the gate signal input end, and a turn-off time of the (i)th branching device is at a (i+1)/(n+1) turn-on time of the gate signal of the gate signal input end, so that a gate signal of the (i)th sub-output end delays for a duration of the gate signal of the gate signal input end multiplying i/(n+1) compared to the gate signal of the gate signal input end. 
 
     
     
       2. The stage-number reduced GOA circuit according to  claim 1 , wherein the one or more branching devices are switching thin film transistors (TFTs). 
     
     
       3. The stage-number reduced GOA circuit according to  claim 1 , wherein the branching node is a gate demultiplexer for branching a gate signal of the gate signal input end into a plurality of output gate signals. 
     
     
       4. The stage-number reduced GOA circuit according to  claim 1 , wherein a gate signal of the (i)th branching device delays for a duration of the gate signal of the gate signal input end multiplying 1/(n+1) compared to a gate signal of the (i+1)th branching device. 
     
     
       5. The stage-number reduced GOA circuit according to  claim 1 , wherein a stage-number of the sub-GOA unit is m, and the one or more stages of the sub-GOA comprise a first GOA sub-circuit, a second GOA sub-circuit, . . . a (j)th GOA sub-circuit, . . . , and a (m)th GOA sub-circuit. 
     
     
       6. The stage-number reduced GOA circuit according to  claim 5 , wherein a gate signal of a gate signal input end of the (j+1)th sub-GOA unit delays for a duration of the gate signal of the gate signal input end compared to a gate signal of the (j)th sub-GOA unit. 
     
     
       7. The stage-number reduced GOA circuit according to  claim 1 , wherein a signal of the gate signal input end is same as a signal of the original output end. 
     
     
       8. A display device, wherein the display device comprises a stage-number reduced gate driver on array (GOA) circuit comprising one or more stages of GOA sub-circuits, wherein each of the GOA sub-circuits comprises a gate signal input end, an original output end, one or more sub-output ends, and one or more branching devices corresponding to the one or more sub-output ends; and
 the gate signal input end and the original output end are connected to a branching node, a first end of the one or more branching devices is connected to the branching node, and a second end of the one or more branching devices is connected to one or more corresponding sub-output ends; 
 wherein a number of the one or more sub-output ends of each stage of the sub-GOA unit is n, a number of the branching devices is n, the one or more sub-output ends comprise a first sub-output end, a second sub-output end, . . . a (i)th sub-output end, . . . , and a (n)th sub-output end, and the one or more branching devices comprises a first branching device, a second branching device, . . . a (i)th branching device, . . . , and a (n)th branching device; 
 wherein a turn-on time of the (i)th branching device is at a i/(n+1) turn-on time of the gate signal of the gate signal input end, and a turn-off time of the (i)th branching device is at a (i+1)/(n+1) turn-on time of the gate signal of the gate signal input end, so that a gate signal of the (i)th sub-output end delays for a duration of the gate signal of the gate signal input end multiplying i/(n+1) compared to the gate signal of the gate signal input end. 
 
     
     
       9. The display device according to  claim 8 , wherein the one or more branching devices are switching thin film transistors (TFTs). 
     
     
       10. The display device according to  claim 8 , wherein the branching node is a gate demultiplexer for branching a gate signal of the gate signal input end into a plurality of output gate signals. 
     
     
       11. The display device according to  claim 8 , wherein a gate signal of the (i)th branching device delays for a duration of the gate signal of the gate signal input end multiplying 1/(n+1) compared to a gate signal of the (i+1)th branching device. 
     
     
       12. The display device according to  claim 8 , wherein a stage-number of the sub-GOA unit is m, and the one or more stages of the sub-GOA comprise a first GOA sub-circuit, a second GOA sub-circuit, . . . a (j)th GOA sub-circuit, . . . , and a (m)th GOA sub-circuit. 
     
     
       13. The display device according to  claim 12 , wherein a gate signal of a gate signal input end of the (j+1)th sub-GOA unit delays for a duration of the gate signal of the gate signal input end than a gate signal of the (j)th sub-GOA unit. 
     
     
       14. The display device according to  claim 8 , wherein a signal of the gate signal input end is same as a signal of the original output end.